package com.coco.seck.config;

import org.springframework.amqp.core.Binding;
import org.springframework.amqp.core.BindingBuilder;
import org.springframework.amqp.core.CustomExchange;
import org.springframework.amqp.core.Queue;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;

import java.util.HashMap;

/**
 * @author HanSama
 * @date 2021年08月08日 18:59
 * 定义延迟交换机 和 队列
 */
@Configuration
public class DelayedQueueConfig {

    public static final String DELAYED_QUEUE_NAME = "delayed.queue";
    public static final String DELAYED_EXCHANGE_NAME = "delayed.exchange";
    public static final String DELAYED_ROUTING_KEY = "delayed.routingkey";

    // 延迟队列
    @Bean
    public Queue delayedQueue(){
        return new Queue(DELAYED_QUEUE_NAME);
    }

    // 自定义交换机 我们在这里定义的是一个延迟交换机
    @Bean
    public CustomExchange delayedExchange(){
        HashMap<String, Object> map = new HashMap<>();
        //自定义交换机类型为 延迟交换机
        map.put("x-delayed-type","direct");
        return new CustomExchange(DELAYED_EXCHANGE_NAME,"x-delayed-message",true,false,map);
    }

    // 绑定交换机和队列
    @Bean
    public Binding bindingDelayedQueue(@Qualifier("delayedQueue") Queue delayedQueue,@Qualifier("delayedExchange") CustomExchange delayedExchange){

     return BindingBuilder.bind(delayedQueue).to(delayedExchange).with(DELAYED_ROUTING_KEY).noargs();
    }

}
